1000 Buildings And Number Of Zeros Puzzles
1,411.4K Views
Answered
Fry Link street has 1000 buildings.
A sign board maker is contracted to number the houses from 1 to 1000.
How many zeroes will he need?
Best answer
Answer – 192
EXPLANATION-
Partition 1000 buildings into groups of 100.
Group I – (1..100),
Group II – (101..200),
…………………………….
Group X – (901..1000)
For group I, sign-maker will need 11 zeroes.
For group 2nd to 9th, he will require 20 zeroes each.
And for the 10th group, he will require 21 zeroes.
The total numbers of zeroes required are
= 11 + (8*20) + 21
= 11 + 160 + 21
= 192
Hence, 192 zeros will be required.
none!!
He won’t be making any signboards saying “0”.
All signboards will have a natural number.
Your Answer
More puzzles to try-
Who stole the $100,000?
A man leaves a $100,000 dollar bill on his desk and leaves work. When he returns the money is gone. ...Read More »Hidden object in Brick’s Optical Illusion image puzzle?
Can you find the hidden object in below Optical Illusion image puzzle? What is the other Object?Read More »Ages of Daughters
Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their ...Read More »Cost of remote Tricky math puzzle
A toy car sells for Rs. 550 when sold along with the remote. If the cost of the Car separately ...Read More »Disk colour riddle
Imagine a disk spinning like a record player turn table. Half of the disk is black and the other is ...Read More »Find the roses
At the recent spring fete, four keen gardeners were displaying their fine roses. In total there were four colours and ...Read More »Colored balls in boxes
There are three boxes, one containing two black balls, another containing two white balls, and another containing one black and ...Read More »Funny Cipher Riddle
Can you decipher the following common phrase? T M C A U O H S M W T ERead More »Fastest Animal Riddle
I am the fastest animal but cannot climb the tree. What am I?Read More »Moves to fix the puzzle
We are given 100 pieces of a puzzle. If fixing two components together is counted as 1 move ( a ...Read More »Chemist points gun at the man puzzle
A man walks into a Chemist looking a little embarrassed. He whispers something into the chemist’s ear. The chemist then ...Read More »Who is the real mother
Who is the real mother?Read More »Intelligent Glass
In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples ...Read More »Horror House
You walk into an old horror house. It has no power or plumbing. Once inside, you see three doors. Each ...Read More »What is the value for ‘?’
Find the replacement value for “?” Hint 1 – Start and finish at ”?” (it’s about results); Hint 2 – ...Read More »Fill the Required Number Puzzle
Replace the question mark in the picture below.Read More »How do the campers make it across in 17 minutes?
Four people need to cross a rickety rope bridge to get back to their camp at night. Unfortunately, they only ...Read More »Which day was the day before yesterday
The day after tomorrow is the third day after Wednesday. Which day was the day before yesterday?Read More »Mother and Daughter
A mother is four times as old as her daughter. In 20 years she will be twice as old as ...Read More »What animal should he sell?
A farmer has a ton of strange animals, but he has to sell one of them. He has a pig ...Read More »
Accenture Interview PuzzlesAdobe Interview PuzzlesAge RiddleAkbar Birbal PuzzlesAlgorithm PuzzlesAlphabet riddleAmazon Interview PuzzlesAnalytical MathematicsAptitude PuzzleBank PuzzlesBetting PuzzlesBrain TeasersCalendar PuzzlesCards PuzzlesChess Board PuzzleChess PuzzlesChristmas Puzzlecipher PuzzleCivil Services PuzzleClock time puzzleCognizant Interview PuzzlesCoins PuzzleComputational PuzzleconundrumCoronavirus PuzzleCoupondunia Interview PuzzleCritical Thinking Puzzledata analyticsData Structure Interview QuestionsDecode PuzzleDetective PuzzlesDice PuzzleDictionary Riddlesdifficult riddleEasy Math puzzlesEasy puzzlesEinstein puzzleEnglish RiddleFamily Tree Puzzlefamous puzzleFill in the blanks riddlesFinding Killer RiddlesFlipkart interview puzzlesFunny RiddlesGeneral KnowledgeGeographical PuzzleGoogle Code Jam 2014Google Interview PuzzlesGRE PuzzleHard Puzzle